Philadelphia sustainability czar Christine Knapp flew to San Francisco on Wednesday to reenlist the city in the international war on climate change. Philly will join other cities from around the world…

Northeast Philadelphia residents have a new green area to enjoy.
Natural Lands, a conservation group, invested $500,000 to create a conservation easement that preserves 49 acres of the Friends Hospital property,…

To the uninitiated, it sounds simple enough: Design a cheap, urban-friendly composting device that works at a neighborhood scale — something bigger than a backyard composting bin, but smaller than a commercial system…

Healing wounds and recovering trust are not easy things to do. Yet that’s what Eastwick residents and the Philadelphia Redevelopment Authority, in coordination with other city agencies, set out to accomplish…

Philadelphia's building code is set to receive an update expected to reduce energy bills and shrink the city's carbon footprint.
On Thursday, the Council’s Licenses & Inspections committee gave the green…